524 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



the first two well rounded, and smooth, the last one showing the 

 beginning of the postnuclear sculpture. The postnuclear whorls are 

 narrowly shouldered, almost flattened, and marked by irregular, 

 decidedly retractively curved, almost threadlike incremental lines, 

 which are closely approximated and which extend on the last whorl 

 from the summit to the umbilical chink. In addition the whorls are 

 marked by ill-defined spiral threads and the usual crisscross micro- 

 scopic incised lines, which cut the fines of growth obliquely, both 

 protractively and retractively. The aperture is oblique and broadly 

 oval, with the outer lip decidedly expanded and reflected. The inner 

 lip is also expanded, decidedly so at its insertion where it is reflected 

 over the umbilicus, of which it leaves only a very narrow chink. The 

 parietal wail is covered by a rather thick callus. 



The type (U.S.N.M. no. 313555) was collected by von Mollendorff 

 in southwestern Mindoro. It has 7 whorls and measures: Length, 

 73.1 mm; greater diameter, 36.9 mm; lesser diameter, 27.9 mm. 



This subspecies can readily be distinguished from the others by its 

 regularly conic outline. 



COCHLOSTYLA (CHRYSALLIS) CANICEPS CANICEPS Bartsch 



Plate 114, Figure 5; Plate 115 



1932. Cochlostyla (Chrysallis) caniceps caniceps Bartsch, Journ. Washington 

 Acad. Sci., vol. 22, p. 343. 



Shell elongate-conic. The first nuclear portion is flesh-color, which 

 is succeeded by pale buff gradually shading into the dark chestnut-color 

 of the last turn. In the early light-colored whorls there is a narrow 

 zone of brown near the summit. In addition the whorls are marked 

 by fulgurations and bands of pale-buff or yellowish-buff axial bands, 

 which on the last whorl extend from the summit to the umbilical 

 chink. The last whorl also shows a peripheral dark line separating 

 the spire from the basal portion. The aperture is bluish white edged 

 with dark chestnut-brown, which also extends over the outer portion 

 of the peripheral callus. Nuclear whorls 2.8, the first two smooth, 

 the last one showing the beginning of the postnuclear sculpture. The 

 postnuclear whorls are very narrowly shouldered at the summit and 

 crossed by retractively curved, irregular, and irregularly developed 

 fines of growth, which are rather closely approximated and do not 

 merit the term of threads. There are also fine, obsoletely incised spiral 

 lines and the usual microscopic crisscross sculpture, which cuts the 

 lines of growth obliquely both protractively and retractively on spire 

 and base. The aperture is broadly ovate. The outer lip broadly 

 expanded; the inner lip also expanded, decidedly so at its insertion 

 where it is reflected over the umbilicus, of which it leaves only a 

 narrow chink. Parietal wall covered by a rather heavy callus. 



